/*
 * Copyright 2015 GenerallyCloud.com
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package com.generallycloud.nio.container.jms.decode;

import com.generallycloud.nio.codec.protobase.future.ProtobaseReadFuture;
import com.generallycloud.nio.container.jms.MQException;
import com.generallycloud.nio.container.jms.Message;

public class DefaultMessageDecoder implements MessageDecoder {
	
	private MessageDecoder[] decoders = new MessageDecoder[6];
	
	public DefaultMessageDecoder(){
		decoders[Message.TYPE_ERROR] = new ErrorMessageDecoder();
		decoders[Message.TYPE_NULL] = new EmptyMessageDecoder();
		decoders[Message.TYPE_TEXT] = new TextMessageDecoder();
		decoders[Message.TYPE_TEXT_BYTE] = new TextByteMessageDecoder();
		decoders[Message.TYPE_MAP] = new MapMessageDecoder();
		decoders[Message.TYPE_MAP_BYTE] = new MapByteMessageDecoder();
	}
	
	@Override
	public Message decode(ProtobaseReadFuture future) throws MQException{
		int msgType = future.getParameters().getIntegerParameter("msgType");
		return decoders[msgType].decode(future);
	}
}
